motocross / default rider 183 cm
Maico 490 Sand Spider vs Yamaha YZ426F ergonomics
Maico 490 Sand Spider and Yamaha YZ426F have modeled posture scores within three points for the 183 cm default rider. Treat this as a planning estimate; posture preference, data confidence, and a real test sit still matter.
Modeled fit comparison
Maico 490 Sand Spider
All contacts reached
Yamaha YZ426F
All contacts reached
The modeled scores are within three points, so the result does not distinguish a higher-scoring bike. Treat the result as a planning estimate and compare each bike's geometry confidence before a real test sit.
Rider fit: reaching the ground
The Maico 490 Sand Spider lists a 1010 mm seat; the Yamaha YZ426F lists 998 mm — a 12 mm difference. Seat height is only a first-pass ground-reach input. It does not establish safety or actual foot contact. Seat width, suspension sag, boots, mobility, load, and individual proportions can materially change the result.
On seat height alone, the Yamaha YZ426F has the easier modeled ground reach. Load your measurements into the simulator to compare the model, then verify both motorcycles in person.
Geometry snapshot
| Spec | Maico 490 Sand Spider | Yamaha YZ426F |
|---|---|---|
| Seat height | 1,010 mm | 998 mm |
| Wheelbase | 1,490 mm | 1,490 mm |
| Wet weight | 110 kg | - |
| Displacement | 488 cc | 426 cc |
Posture metrics
Knee angle
- Maico 490 Sand Spider
- Sport (58.1 deg)
- Yamaha YZ426F
- Sport (58.1 deg)
Hip angle
- Maico 490 Sand Spider
- Neutral (93.2 deg)
- Yamaha YZ426F
- Neutral (93.2 deg)
Elbow angle
- Maico 490 Sand Spider
- Relaxed (143.3 deg)
- Yamaha YZ426F
- Relaxed (143.3 deg)
Torso lean
- Maico 490 Sand Spider
- Neutral (12.6 deg)
- Yamaha YZ426F
- Neutral (12.6 deg)